We are looking at a 1984 cruising boat; the boat currently has rod rigging (I don't know the age). How does it get evaluated? How does a surveyor decide "this needs a more detailed check". With wire, there are often visible indications that there's a problem, but I don't see how that could happen with the rod rigging. What's the "nominal" life time? The boat in question is a 35 foot boat that has been cruised regularly for many summers, but (AFAIK) has never been a live-aboard or long-term cruising boat.